AWS Amazon OpenSearch Service

• CVE-2026-84942 High 8.7 Stored Cross-Site Scripting via Vega Expression Function Bypass in OpenSearch Dashboards 0.5%
• CVE-2026-77811 High 8.7 Stored Cross-Site Scripting via Integration Template Asset in OpenSearch Dashboards 0.5%
• CVE-2026-18420 High 8.8 RCE via Prototype Pollution in OpenSearch Dashboards 1.0%
• CVE-2026-75897 High 7.5 Uncontrolled Resource Consumption in Capabilities Route in OpenSearch Dashboards 0.7%